Drew said: "Also, there are many parks I frequent where it's not appropriate to use the motor, I just switch off and pedal through those areas, but with a 70# bike (and usually some cargo), the gears are definitely needed!"
There is a large open-space county park (San Diego Sycamore Canyon), that I plan on frequenting (commuting through, for about 2.5 miles, from Santee to Poway in the mornings, then back again in the evenings), which allows bicycles on the fire roads (no unauthorized OHVs) - however, the speed limit for bikes is 10mph in the park. To not draw attention, I'm planning on keeping my speed at or below 10mph (at least when in site of the Ranger Station, or other hikers/bikers), always keep the front sprocket in the "middle" setting, and use the "middle" rear "pedal-assist" gears while in the park (again, always "pedaling" to not draw attention), and then going to the smaller rear gears while on the roads leading into and out of the park (where I don't really need to pedal, unless I have to be "inconspicuous" because there is a Ranger present to open/lock the park gates at opening/closing time, which is 8am-7pm April-Sept; 8am-5pm Oct-March).
Any pointers or recommendations, in regards to the above, on keeping a "low profile" are welcome.
BTW, here is a trail map for Sycamore Canyon Park - (bikes are allowed on the dirt fire roads, and some marked trails, only):
http://www.sandiegocounty.gov
BTW II: I'm doing this because the traffic for my commute to Poway from the SDSU area (either via the I-15 & Pomerado Rd, or via the 67 thru Lakeside) has been getting more and more congested each month. Also, California continues to raise gasoline taxes through the roof (we pay about a $1 more per gallon versus the rest of the country, and there are plans by the super-socialists at CARB to DOUBLE the price of gasoline to $8/gallon, and put restriction on the amount of miles one can drive per week!), and I've got to figure out a way to "beat the system".