Complete electrical power loss. Please help!

[samtrappett]

I'll try to make this short. Any help is greatly appreciated.

A couple months ago a semi truck tire jumped out in front of my 07 Yaris S, and ramped/jumped said tire. Surprisingly there was little cosmetic damage other than the plastic splash guards being ripped up.

Fast forward a month and my A/C quits working (I think it non related).

Fast forward another month (yesterday) and it's raining outside and tons of water in the road and had to drive in it (had to drop off kiddo to airport). First my battery light comes on. I pull over and check under the hood. Nothing stood out as the culprit. I drop the kid off and on the way home (3 hours away) a guy slams his brakes in front of me which caused me to slam mine. This is when all heck breaks loose. All of a sudden the ABS and air bag lights come on and I immediately lost power steering. I pull over, pop the hood, look under the car, can't find anything obvious. I'm still a couple hours from the house so I take off again. This time it's under reduced power. Then the speedometer goes wild and quits working. I go to pull off the road again and when I pressed the brake pedal everything went black and zero power. Wierdly the motor continued to run, but when I tapped the gas it shut of as well. I couldn't roll up the window, could do anything. Zero power. Had to pop the little cover off the side of the shifter to depress the button just to get it out of park so my friend could tow it.

If anyone knows what may cause this or what safety features would cause a complete shutdown or anything it would really help me to diagnose this issue. I really love this 40mpg car and hate to lose it. Please help!

Thanks in advance!
Sam