More problem!!! This time engine...whens it gonna stop??

[BC69]

Okay, so lets see if you can solve this or give me some ideas? I was driving home today from a cruise night and I noticed some odd things. First not even a mile down the road I was running like 170, the car had been sitting for 2.5 hours with the hood up, and the drive to the show was only 25 minutes. But thats the little thing.

I was a few miles from home and I noticed the oil pressure gauge was down to 25lbs. I have seen it down, but it will come back quickly, well it didnt and stayed there til I got home.

Here is the kicker, I come up my street (I live on a hill so you are kinda on the gas good coming up the street) I turn into my drive way, and NOTHING...car died!!! Just shut down, no sounds, no clangs, no nothing, but dead!
I get out, look under the hood to see if something popped, get in, turn it back on a little heavy to start but nothing big, and its fine, but the oil pressure is now at 10lbs. I let it run for a min in the driveway, put it in the garage, and came up here to type this out.

Help?!!?! Any ideas?

Thanks
Tim