Aye want to use trolly jack and axle stands in there - just wanted to get it ready for all that. definitely don't want it cracking and peeling off the top layer

It has horizontal lines front to back down the length of the garage - I guess that's 'tamp finish' ?? It's not THAT bad, but I would like it smooth. Rich - is this paint you used, did it level it slightly or is it not that thick?