1997 toyota camry
driving 60 car started losing power, then the rpm and temp gauge spiked and came back down and car shut off??

 

Sounds like a squirrelly electrical problem. My first guess is the actual ignition switch. The symptoms sounds little bit like the car turned off and then back on again. It might also be a ground wire problem. The insulation on a wire has worn off and it momentarily touched ground at that spot. I would check the battery too. A battery that is getting low can cause lots of weird problems in cars, I'm told, by mechanics I watch online like Scotty Kilmer. Or, go ask Scotty Kilmer on his website On The Road With Scotty That's what I would do. He is a Toyota expert. BTW - you're in a Honda forum so you might actually get better help on a Camry forum if you want to go that route.