How big is the swap meet at the GM Tech Center ???
We go every year always find something different. There is no mud it's all on asphalt. I M O there are lots of vendors,mostly used. There is some new parts vendors too.
The parking for the buyers/spectators is inside the parking garage with the entrance off of twelve mile. There is a large car show with a good variety.In my opinion this is a quality event
and is a nice spot. Tim Hortons right across Van Dyke too.