On Friday, I left work no problem, and got about 20 kms, when the ABS light came on, and then followed by the SRS light. Never having seen the SRS light before, I pull over, turn the car off to check the manual and fuses. Not seeing any fuses out, I go to start the car, and get nothing. Oh oh. After about 5 minutes, the car starts again, which is good news, since I'm miles from anywhere.

In the past when the ABS light has come one, it's only ever been for a few seconds or a few minutes.

I get about 10 minutes further along, when the lights reappear, and the car stalls, and I'm able to coast to the shoulder from the highway. Patiently I wait again for about 10 minutes, and the car starts again. Worried about the fading day light and traffic, don't feel good about the situation. Driving with no radio,heat, rear defrost and only daytime running lights, to put less drain on the electrical system, I am correct in worrying, as I only get about 3 minutes along the highway and lights reappear for the 3rd time and barely get to the shoulder yet again.

Having read about the OVP relay in the past, I figure this is the culprit, so don't want to pay huge dollars for anything else. Unfortunately traffic is insane, so figure there is no point even trying to start the car again, until traffic clears, and I get get from the express lanes to the collectors and off at the next ramp, about 2 kms away. Patiently waiting for traffic to clear, after about 20 minutes a tow truck appears, and I agree to be towed off the highway to a mall parking lot about 3 kms away. After getting something to eat and waiting for my wife to pick me up, I am able to start the car again, no problem and move it closer to the mall.

Thinking it's just a OVP relay, I leave the car their until Saturday when I can get the relay and drive home.

Saturday: After installing the part, I try to start the car, and it would appear the battery is dead. After a boost, I have my wife follow me home. Ah not so lucky, again after about 15 minutes, of driving the ABS and SRS lights reappear, and again at dusk, I am losing electrical, lights diming, no heat, ugh. Make it to a gas station along the highway, the 300e is dead again. After a boost, the car starts, but before even getting anywhere, all lights reappear, and she dies.

Before I incure huge repair bills, where do I start, I imagine the battery is dead now, and is this an alternator probem. I have tried to be as detailed as possible in the hopes that someone can help here.
Thanks, Sorry about the long post.