Nickname: tin man

Review: Can you say Hindenburg? I spoke with some GM engineers 3 years ago. They said that if the tank explodes it would create a crater in the freeway 3 lanes wide. The cause of such an explosion: getting rearended.

Date reviewed: Jul 22, 2007 5:31 AM

Nickname: Bunny

Review: I personally think that the hydrogen car is a good idea not only for its obvious environmental safety but it's a much cheaper way to drive around.

Date reviewed: Sep 26, 2006 6:23 PM

Nickname: Hybrider

Review: Not mentioned is the hydrogen driving range (125 miles) and the cost (over $4 per gallon gas equivalent). The cheapest source of hydrogen is by reformulating natural gas, but a compressed natural gas car is cheaper, more efficient, has greater range, uses less natural gas, and makes less CO2! Lithium batteries can be charged/discharged with 80% efficiency, but electrolysis/hydrogen fuel cell is 60% efficient, and electrolysis/hydrogen IC engine efficiency is only 15%. ("HHO" Hytechapps is redoing an old scam). LiIon batteries can power a car with 350 mi. range at freeway speeds. See AC Propulsion, Tesla Motors, Venturi Fetish, etc. Small lithium batteries in "pluggable" hybrids could get some energy from the grid (0.70 per gallon gas equivalent), leading to electric hybrids and pure electrics ruling the roads. High cost, poor efficiency, limited range, and limited availability dooms the hydrogen highway, but a cheaper better solution is here.

Date reviewed: Sep 17, 2006 11:21 PM

Nickname: out side of the box

Review: Has anyone looked at the air car? It is air-powered by commpressed air. The engine works in the opposite way - a multistage commpressor. They have a website also mdi is the name

Date reviewed: Sep 15, 2006 6:33 AM

Nickname: Wintermute

Review: In my opinion, hydrogen power cells are the most efficient way to provide energy to cars. I have to specify two points : First, since a hydrogen power cell produces electricity, all so-called hydrogen cars are actually electric cars. Second, for those who wonder if producing hydrogen is really cheaper than looking for, than drilling and pumping oil, look at what a gallon of liquid hydrogen costs, then do the math. What is really a challenge is the cost of the materials used to build a hydrogen power cell, which include rare metals like platinium. If this material problem can be overcome - and it sure will be - then the hydrogen cell will soon spread to all automakers' products. No one should worry about risks involved in the refueling process, for it is simply a matter of design: we can imagine these H-cells made like batteries, leaving the used one at the refueling station, then picking up a filled one, the way we already do with gas bottles.

Date reviewed: Sep 14, 2006 12:15 PM

Nickname: Chris

Review: Electricity is not the answer for a number of reasons - first off, solar panels are out. The amount of power produced in a day by a roof-top solar panel would be used up before you backed out your parking spot. Secondly, the ability of a battery to hold a charge not only significantly decreases in cold weather, but batteries eventually wear out and no longer hold a charge. The cost of replacing your car's batteries every 50 - 100,000 kms would undoubtedly be high. Finally, few people are going to tolerate a car that must be charged up periodically. Imagine a cross-country road trip where every 6 hours you had to sit a service station for 2 hours while your car refueled. Ultimately, we will either have to find a way to produce cheap electricity indefinitely (consequently being able to produce Hydrogen or recharge batteries), or find a replenishible fuel such as ethanol that can be grown. This, however, will likely mean paying several times more at the pump.

Date reviewed: Sep 14, 2006 2:22 AM

Nickname: periodic table guy

Review: How is Hydrogen made?!?!? You don't "make" hydrogen - it's probably the most common element in the universe! You see that ball of fire in the sky that gives you your fashionable skin tone? Hydrogen! I hear you are breathing these days, true? There's some hydrogen in there. Taken a bath lately? Get my drift? At first it will probably be supplied by gas moguls like Praxair, but eventually you'll have some generator in your yard that pulls the gas you need out of the air or the water. Like the other guy said, also checkout HHO by Hytechapps.

Date reviewed: Sep 14, 2006 2:15 AM

Nickname: Dell d420

Review: Ya Sure! They had to come up with something like this to stay in the competition. Toyota already have the "Hybrid," which is a better version than the BMW 760 LI.

Date reviewed: Sep 14, 2006 12:44 AM

Nickname: ElectricMan

Review: Electric motors would need a transmission to maintain peak power. Electric might be the answer, but it brings with it a whole new realm of possible problems. Not everything can be as simple as an electric toothbrush. Also, current battery technology is either way too expensive, slow charging, too big, or many other things that make a hybrid much more useful than a pure electric car. A hydrogen car is a sustainable goal.

Date reviewed: Sep 13, 2006 7:34 PM

Nickname: EKP

Review: I am not a chemistry wiz or anything like that, but the bandwagon says hydrogen is clean, abundant, etc. Part of the problem is "oxides of nitrogen," the pollutants we are trying to reduce. Water vapor is a byproduct of hydrogen combustion, but so are oxides of nitrogen. In order for water to be the only byproduct of hydrogen combustion, oxygen must be the reducing catalyst - H2O, you know. Stop monkeying around with petroleum, hydrogen, vegetable oil, whatever and just go solar. We've had 30 years to get away from that dependence, and it looks like we'll trade for hydrogen. Solar is the way to go.

Date reviewed: Sep 13, 2006 7:32 PM