Driving toyota matrix 2010, in 97degree heat, up a hill (6 miles long), in 3rd gear, air conditioning off (as suggested at the bottom of the hill), on cruise control. speed of approx 60 mph. the car sputtered and then stalled. i was able to restart it after about 5 min. nothing was done to correct the failure yet. an appointment with the dealership has been made. *tr