that was a rub, IF YOU AIN'T RUBBIN
lol, when you hit it, you'll know. I still remember my first time to the rc track back in the mid 80's. it was an indoor dirt track. Pop down the car on the straight, walk alllllll the way up to the drivers stand, take of...watch car watch car watch car watch car....OH **** WALL...try to tur.....SMACK...broken a-arm, parts available in the hobby-shop, have a nice day!
Until you get the hang of it, there is such a tendency to watch the car instead of where it is going, you are going to break no matter what first time out if there are walls. :-)