Despite the BMW Group's assurance that it has taken every precaution and covered the worst-case scenarios, many people still doubt the wisdom of using highly flammable hydrogen as a fuel.

BMW claims hydrogen offers a clear advantage over gasoline because it is 15 times lighter than air and disperses quickly instead of forming hazardous puddles on the ground like gasoline does.

But the extensive safety measures BMW has taken with the Hydrogen 7 only seem to prove how sensitively it has to be handled.