Updated 10012007 E300 I tested after I took my son to school (I want to test the unity of returns for 30 days did.) Classes of the district, and around the park. Is a windy day (wind and rain threatens), I found a lot of turbulence. Walking the hill was too small. I just feel warm all the hard non stop, E300, and finally for 25 minutes with a flexible button (the engine). Since my weight (210 pounds), I can say that the engine is small and not for adults or hills determined, so I am impressed with the performance, especially since intermittent wind sheer, I realized that the motor voltage (which has no other choice than like a candle, before forcing