My favourite indoor karting track is Grand Prix Karting in Brossard, Quebec, Canada. The track can be very demanding because there are different grip levels, elevation changes and it is very bumpy at some areas. There are many different kinds of corners, and the front desk/snack bar area is in the middle of the track, so you have to cross a bridge over the track to get there. The owner is pretty involved in the Coupe de Montréal series which is competitive kart racing like the Rotax Mx Sr. class and so on. Drivers like Andrew Ranger have driven there while attending the Grand Prix of Montreal in the Champ Car World Series. The lap times at Grand Prix Karting are on average 44 sec. or so. My best lap time there is 43.18 sec. where I was in an endurance race there against 11 other teams, some were professionals. My team, the Canadian XRacers Karting Team, actually won that event and got $120.00 in winnings. Here's their website:
http://www.grandprixkarting.com/En/1...ainWindow.html.