Toyota Motor Corp. asked the U.S. auto-safety regulator for a two-year exemption from a rule governing electric cars to clear the way for the company to sell its new fuel-cell vehicle. The rule, called FMVSS No. 305, requires carmakers to isolate high-voltage parts in electric cars in the event of a crash. Toyota said its car instead will protect occupants and first responders from electrical shocks by insulating high-voltage cables and surrounding components such as the fuel-cell stack, motor and battery with metal barriers. The company, which hasn't disclosed sales targets for the fuel-cell car in its media statements, said it will limit deliveries of the vehicle to 2,500 units a year. http://www.autonews.com/article/20140630/OEM05/306309914/toyota-seeks-exemption-from-u-s-safety-rule-to-sell-fuel-cell-car
Just a wild guess, will the free-running FC stack with zero load (by disconnect HV battery) cause high heat until it slowly shut down?
"...Toyota said its car instead will protect occupants and first responders from electrical shocks by insulating high-voltage cables and surrounding components such as the fuel-cell stack, motor and battery with metal barriers..." But doesn't metal conduct electricity? What happens if a wire comes in contact with a metal barrier? Sounds like they're trying to cut corners.
