Frankly, I'm a bit dubious. If you are thinking of L2 stations, they would only be useful for people planning to sleep overnight in their car. Not only is that likely to be a bit uncomfortable, and unrestful due to noise and light, but I think most governments frown on using rest areas that way. So, maybe you are thinking of QC stations. I see three problems with that:
- US auto manufacturers are likely to try to block it since they don't like CHAdeMo.
- that's a very hefty investment for a rest stop, especially since you may want two so people don't have to wait. (How many gas stations have only one pump?)
- Rest areas are usually in rural areas which are unlikely to have enough spare power to run a QC station, let alone two concurrently.
Ray