It's always too late to push for something that is just a bad product.
I don't think this is true. A plug-in hybrid will always have an advantage over a gasoline car, in that it can do short trips without starting the gas engine at all. So for repeated short trips, it acts like a BEV. But unlike a BEV, there's no range limitation or worrying about where to find a charging station.
I've thought fairly hard about a pure BEV and I can't see myself getting one except as an additional vehicle. But I could see getting a plug-in hybrid like the Volt in the near future. Anecdotally, all the people I know who are seriously considering BEVs are buying them as second or third cars. There's certainly a market, but I think it's going to saturate pretty quickly, because a lot of people don't want to have one vehicle for known-distance commuting and then another vehicle for unknown-distance or long trips. While these trips may represent a small percentage of driving in terms of actual mileage, they're enough to shape the choice of cars. (E.g. someone may not drive to grandma's house out in the sticks more than a few times a year, but if the car can't handle that drive, it's not going to get purchased, period.)
I really don't understand why other manufacturers aren't pushing hard on fast charging networks. As you say, those long trips may not be common, but people won't buy the car if it can't make them.
Toyota and Ford hybrids have been successfully used by cab companies for quite some time now. The old Honda IMA setup was troublesome, but their new setup is great.
It's not like standard gas power trains are simple anymore either--turbocharging, direct injection, and dual clutch transmissions are common, even in affordable cars.
* Supercharger can charge at 1.2kWh per minute. (90kWh/75minutes). That means a 10kWh battery can be charged in about 8 minutes which is comparable to a typical gas station time.
* Many plugin hybrids have about a 10kWh battery that gets about 25-30 mile EV range.
* The battery in one Tesla (90 kWh) could be used to build 9 plugin hybrid cars. Since the battery is so much smaller, the additional car price is also much less.
* Big improvement for the environment. The US likes SUVs. And many car trips are short distance (getting groceries, going to school, etc.) If these can be covered by the battery, then the impact of the low-mpg SUV is much reduced.
* Ironically, it would allow a business opportunity for gas stations. Imagine a EV quick charge cable right next to the gas pump. Fill the up the gas tank and quick charge the 10kWh battery at the same time.
* It would be a good fit for those without garages (such as apartments). The EV part of the car is simply a nice to have. The charging is quick enough to do it at those charging stations at supermarkets, workplaces, etc. But it's ok if they can't find any empty EV parking spots, the gas engine will get them home.