It's a case of our either accepting their regulatory measures or modifying our own to comply with their measures. I am referring specifically to lengths, angles, types of windows, and other safety issues. I mentioned the bumper a while ago. The bumpers are good for five kilometres in Europe. We ask for 7.5 here in North America.
So it's all about these little things throughout the vehicle; it's not the propulsion system, not the electric system, that's the hurdle. It is, however, the engine. This is a big hurdle in itself, because we have just one manufacturer in North America that can build an engine for a city bus, whereas there are dozens in Europe.
So these types of measures are what the big hurdles are right now.