I was driving mine too when it did it. I stopped at my house for 10 minutes and it wouldn't start when I came back out.
Check your timing. Also, try spraying some starter fluid into the throttle body. If it fires, then you have spark. Remove the fuel line off the fuel rail and turn the key on and see if it is pumping fuel to the rail. Then test it with the schrader valve.
If you have fuel and spark, they are not happening at the same time so your timing is off.