30 mile commute
Further observations:
1. I need a system that will operate well in somewhat inclement weather. I think/feel that chain drive is the most reliable for my situation.
2. A total of 60 miles a day, some after a strenuous day's work, just won't cut it sitting on an ordinary bike seat. I'm going to have to go recumbent.
3. I will need to haul groceries, gas for generator, propane tank, etc., in a trailer, on a regular basis. 2,2 hp 43cc will not do that at a reasonable speed (30mph). This runs me up against the rules for motor assisted bikes.