[You Need a Thneed]

To add to what BBS has said, hydrogen (depending on the technology) requires fuel up stations, electric cars can be plugged into any outlet, anywhere. Hydrogen would require 1000's of gas stations to add Hydrogen, no small task, when it would mostly go unused until such time as a higher percentage of cars were using it.

Hydrogen vehicles also don't go very far between refuelling, and don't have as much room for improvement in that regard as electric vehicles do. You can only store so much Hydrogen in one small vehicle safely - without that vehicle becoming a bomb driving down the freeway. Safety is very important when using hydrogen fuel tanks, as the gas must be compressed, and even otherwise is significantly more explosive than gasoline.

Like BBS says, Hydrogen in its pure form isn't very abundant on this planet, and the only way to produce large quanitities of it seems to be to use LARGE amounts of power. So, a mass conversion to either technology would require significant power generation expansions.

The Tesla can go 300-400 km before recharging, how often do we drive that far without stopping somewhere for 3.5 hours? Reimbursment for using someone else's power is a problem, but one that's fairly easily solved, as charging the batteries would only use about 2 dollars of electricity. Most people wouldn't have a problem with giving someone 2 bucks worth of electricity once in a while, knowing that someone will do the same for them.

No, current electric cars won't be capable of long distance trips, but in the coming years, this will improve. Plus, vehicles like the Chevy Volt could cover people who need to drive long distances.

Or, you could tow a trailer with a generator behind your electric car. That'd be my choice. Can't you see me in my Tesla, towing a trailer, with a generator strapped on, and electrical cords sticking out everywhere?