I'd be wary of spending hundreds of dollars and then having something not quite powerful enough so you still had to pedal, and then have to deal with all the added hardware, weight, and maintenance, etc. Do you have a place where you can test ride?

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma