Weather was awesome today. 70 degrees and dry. Keep in mind this is straight out of the box. No charge, no adjustments, just unscrew 4 screws put the handle bars in place and screw 4 screws. The first night between my son, 16 years old (5'8" 115 lbs) and I, 50 year old woman (5'8" 185 lbs)we rode one for about 5 minutes. Today, first I rode the bike with the button on the top. In novice mode, I rode about 45 minutes on the street. Take off is slow and the bike reaches about 20 miles per hour (guessing). It was smooth and fun. Then I switched to ride mode. The throttle was much more reactive. When I gave it throttle it accelerated much faster however it stuttered and lost power. The light on the "gas tank" blinked red when it lost power. I rode about a quarter of a mile in this mode. Accelerating then stuttering and repeating. It still ran fine in novice mode. Remember I did not charge them and it may have been low on battery. I then got on the other bike, the one with the button on the side. I rode it about 5 minutes in novice mode. It seemed a little faster. Then I switched to ride mode. Watch out. It accelerated great and it is FAST. I was too nervous to stay on full throttle for long. I am guessing it was going 30 miles per hour. Again I was only riding on a street in my neighborhood. The street is hilly and it takes a lot of effort to ride a bike up the hill. No problem for the free-rider. It was really fun to pull out slowly behind a car and easily catch up with them. Super fun. I am not a competent bicycle rider (it has been years) and my last motorcycle was a Ural with a side car so I don't want to over ride my skill level, so I stuck to the street and had a blast riding around starting off slow or from a stop and accelerating quickly is a thrill. It is a little noisier than I imagined but not bad. The deer were not scared but definitely looked. My initial impression is that the free riders are AWESOME. The seat, however, is NOT comfortable. My crotch is sore and my legs will be sore from holding my crotch off the seat so I could continue to ride. It will not stop me from riding. I am charging the one that stuttered and lost power for a few hours tonight and will try it again tomorrow (weather permitting). I am also planning to read about how to adjust the shocks (I should have done this before I rode but I was too busy and excited). Let me know if you have any questions that I can try and answer for you.