The straight up problem is fuel efficient engines. You *must* have power in order to pull something. If you add weight to a smaller engine, it is going to not only struggle to pull it, but it's own fuel efficiency is going to drop way down, below what an efficient diesel or gas truck pulling the same weight. (as an aside, I have mentioned that those that don't actually use trucks/SUVs for their intended purpose should be shot).
Smaller engines with less power are not what we need. What we needed are engines of the same power and size, and yet consume less fuel and produce less pollution.
Smaller engines with less power are not what we need. What we needed are engines of the same power and size, and yet consume less fuel and produce less pollution.