Well, the project took 1 month by two guys, so we can assume it was non-trivial.
As a personal note, I've got a couple of years in manufacturing, with much of that in automotive. The amount of stupidity that goes on in that industry is shocking. It doesn't surprise me at all that a couple of smart guys were able to build something like this. It surprises me that Chrysler was actually able to get a couple of smart guys to work for them.