Memorial day weekend, Saturday was all day practice @ Black Hawk Raceway north of Rockford ,Illinois. The track is about 1.5 miles long 7 turn track. I noticed my brake pedal was a little soft but nothing major. Recently put on new Hawk brake pads that were not broken in yet. It was 89 degrees out and the car temp would hit 227 degrees after 10 - 12 laps but would cool down with one cool down lap. My last practice lap the car engine died in a 90mph corner. I went off the track doing about 50mph and came to a stop.[Didn't want another car to rear end me]My engine was blazing hot and so were my brakes]No cool down! They towed me in to the pit area. Being a average mechanic ,I figured the problem out quickly,no fuel pressue. After I put gas in the car it started right up.[I averaged 7 mpg running 100 octane] Put the car in my trailer and left it @ the track for Time attack on Monday. !st practice lap Monday, good brakes turn 1&2 , no brakes approaching turn 3,went off into wet grass and crashed into very heavy brush avoiding the big trees. I would have rear ended a nice corvette if I did swerve off course. I was so entangled in the heavy brush the car had to be lifted out by the roll bar with a tow truck. Damage-Extreme dimension front end,stainless steel wind splitter, and Hahn Intercooler completely demolished including front towing hook. Brakes Front calipers melted seals and not useable ,front rotors burnt scored, brake pads toast. Rears not as bad. Not sure why they failed completely all @ once unless I had air in the line from brakes boiling over after shutting down with no cool down lap on Saturday. Next race is in 6 days and I have allot to do on the car