Speed greatly depends on your location, I highly doubt the majority of commutes in Berlin (where I'm at) will be significantly (if at all) faster by car than by e-bike - seeing as the ubahn tops at 45 mph & is quite often quicker to get around town than driving.

I suspect the same is similar to any major (and therefor congested) urban area.

The real killer is the American-style sparse suburban living that requires long commutes on highways...

I'd say depending on where you park the bike can be substantially faster (it's actually door-to-door, a car is very rarely).

I think so too, i was trying to be careful and make the less drastic bet that it's at the very least not slower :)