I've worked on cars for years- these are very poor quality builds. Look close-you see poor paint jobs, cheap details slapped on, shaky fits. The cars they produce all look cheap and tacky.
The chemistry between the crew looks forced at best, Constance rolls her eyes, pouts her lips and juts out her cleavage and with nails like that, that's about all she can do. Shawn is a creepy literal used car salesman, Mark is egotistical and likely an a$$ in private. Caveman looks like he's there mostly for entertainment value.
The builds they do look like plastic monstrosities when they're done, all cheapened and looking worse AFTER the build.
Superficial and classless. Not fun.