Unionizing doesn't seem like it would work very well in an industry of which a significant portion is entrepreneurs with small 3-man shops and the like. Or were

Unionizing doesn't seem like it would work very well in an industry of which a significant portion is entrepreneurs with small 3-man shops and the like. Or were you thinking of just the big chain shops or those attached to large dealerships? In that case I think it might have a detrimental effect on the many small business shops.