Had a good scare last night

[CigarJohnny]

Since my SVX is in the shop I've been driving my wife's wagon. This weekend she stayed at her sister's home in Reading and I had to drive there after work last night to pick up her and the kids. Anyway, I was driving on 222 with the cruise control on heading up a hill at the time. As I neared the crest of the hill I noticed that the car was accelerating and gaing rapidly on the cars in front of me. I went to press the brake pedal and much to my shock it would not budge and the car kept accelerating! I pressed with all my might for a few moments until it finally let go of the throttle and I let my foot off the brake for a second before applying it again. This time it worked like normal and I was able to slow the car down but not my racing heart. That really scared the hell out of me. I never had that happen in a car before and never want to again. A few miles later I got up the nerve to test the cruise again and aeverything worked like it should.

WTF happened?? Has anyone else had this happen to them? Any ideas where to start looking for info on how to prevent or repair this? Thanks!