It took awhile. I think, though, that the time it took allowed the word of the journey to spread. True, it was done 30-40 miles at a time, which shows one of the limitations of electric vehicles in general, but part of the whole story was about them finding places to charge, talking with people along the way, staying with people who invited them to sleep and recharge, and eventually making it to Washington, D.C. The whole idea was to follow (roughly) the same route that the Detroit auto executives took when they went to D.C. to ask for the bailout. At the end of this trip, however, the goal was to give a bike to President Obama. It didn't quite end that way, but I think the trip served one of its purposes - to let people know about the alternatives they have.
As for strapping a generator to the back of the bike, sure, you'd extend the range, but isn't one part of owning an electric vehicle the environmental advantage of zero emissions from the vehicle? Another advantage: weaning us off of our dependence on foreign oil.
I'll admit that electric vehicles have limitations - range is a big one. It's going to take a slight adjustment to our expectations, to our habits, and to our way of thinking about transportation. Would you take an Enertia on a weekend ride across the state? No... that's what the gas bike or car is for. Most people's daily commutes are, round trip, about 30 miles. That's about perfect for the Enertia. Plus, "re-fueling" is free, when you charge at work.