today my kia sorrento cut out. car is fully serviced etc. it happened when i was

[Saw]

pulling out of a junction? so my foot was on the accellerator - quite hard as needed a fast get away due to up and coming cars. in first gear then clutch into second and the car just died. all inigion lights on , radio. i supposed it added like it had run out of diesel- but it had'nt. turned inigtion off, paniced ( 4mins) then started it again and was fine all the way home, although i didnt dare overtake anyone, did'nt want to put my foot to the floor again
going into the garage this week, but has anyonr got any ideas? thankyou