I'm a great fan of season two of PMR, the customisations are far cooler (sorry, but it's the only word i can think of too describe it) and the show is a lot slicker compared to the first season.
It's light hearted entertainment, and i personally just love how the staff at WCC do 'pimp' out the cars in ways that you just wouldn't imagine doing otherwise.
All i'm waiting for is PMR:UK
Edit: It seems to me that some people have missed the whole concept around PMR is that they are creating a car that looks 'pimped' (i.e. completly over the top, blinged to death e.t.c), not one that necessarily appeals to the standard view of car customisation. It's the fact that they do this that makes it more enjoyable to watch, and seperates it from other car customisation shows.
They also do engine work where required, but they don't show it because, quite simply, thats not why people watch the program.