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Photos: Gizmos for gearheads

Among other things, San Francisco car conference features a VW prototype that runs on liquid hydrogen and pumps water vapor out of its tailpipe.
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1 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

Volkwagen's HyMotion hydrogen fuel cell prototype. It can hit a top speed of 87 miles per hour and go for around 120 miles on a tank of liquid hydrogen. However, it may not hit the road for another 10 years. The car is on display at the 12th World Congress on Intelligent Transport Systems taking place in San Francisco this week.

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2 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

The engine of the HyMotion. Hydrogen flows into the fuel cell, which grabs electrons to run an engine. Water vapor comes out of the tailpipe.

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3 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

The liquid hydrogen tank takes up nearly all of the trunk in Volkswagen's HyMotion prototype hydrogen car. But better compression will shrink the tank size. The car is also based on a standard Volkswagen and not specially designed as a hydrogen vehicle.

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4 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

BMW is working on a communication system that will let one car convey information about road conditions to those behind it. In this photo, the LCD screen on the dashboard flashes up a warning to a moving car that the road is slippery ahead. Minutes before, another car did a power slide through a wet patch on the same path.

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5 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

With no hazards imminent, the screen provides data on the current status of the car. Motorola and GM are working on similar systems.

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6 of 6 Bill Detwiler/ZDNet

Photos: Gizmos for gearheads

BMW's Connected Car. The cars are on display at the 12th World Congress on Intelligent Transport Systems taking place in San Francisco this week.

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