Last weekend after parking the car on my driveway, next day it wouldn't start. It would crank very strong but no start. Car has 172k miles on it. Anyway, I initially thought it was the fuel pump. I would swear that each time I would start the car, before it cranked over, I would hear a faint buzz-like sound of the fuel pump pressurizing. Because I no longer heard this I assumed fuel pump or maybe a fuel relay (if there is one). I had it diagnosed today and it turned out to be the CrankShaft Position Sensor. This is a $110 part. So its fixed and running again. I'm going to start listening hard again to see if i hear that fuel pump sound when I start it.