I’m stuck please help

Sorry everyone but I’m new to gaming. Haven’t played in over 20 years. Just installed and began playing Forza 4 Horizon that came with console. About 2 hours in I come across an activity stop on the map. I enter it, now I’m stuck. It’s a room with music playing in it, my car is all opened up, and my guy is standing there looking at it. It’s been like this for hours. Pressing every button on my controller does nothing. Please help!!