We had a breakdown in Las Vegas, and in the end he was able to come by on a weekend evening to diagnose the problem, and then fixed it the next day and got us back on the road, at almost 1/2 to 1/3rd the price of everywhere else.
He was thorough and didn't cut the corners that many of the other estimates we got would not have included, such as cleaning out the fuel tank for us to make sure we didn't have more problems (our fuel tank clogged from bad gas from being in storage).
He saved the day for us!