An ultrawide is a nitro 1/10 truggy made by Redcat (see my pics). longer suspension arms, and made of aluminum for better stability. When yo ugo t a track you usually have to check in and state your frequency. If someone else has the same frequency as you you cannot turn on your remote. you may want to go to your lhs and buy a second set of crystals for your car and radio. then you can change if you need too.