Bad Oil Leak!

Hi folks, I just had a really bad oil leak on my car, just got home, here's what I know so far:

Last night I drove it, got back from the bar, everything seemed fine, I don't recall an oil spot in the garage (I don't recall looking when I got home though).

I drive my car every day to work (about 10 miles one way). So my car doesn't sit for long periods.

Took off in the car today to go to a music store, about 15 miles from my house. I took the highway, kept it under 80 or so.

Got off the exit ramp, saw a cop had pulled some folks over, and I smelled something 'like' diesel fuel, assumed it was the folks on the side of the road.

About 3-4 mins later, I was on a surface street, pulling into the music store, noticed some smoke behind me but it was very light, assumed it was someone else.

In the music store for like 10 mins, get a call from my next door neighbor: "Hey Don, there is a big oil strip down the driveway from your car. I look out the window at my car, giant oil puddle the size of the car.

I walked down to the gas station, bought 4 quarts of oil. Checked dipstick before adding, dry as a bone!. I put all 4 quarts in and started limping her home on surface streets.

I kept it around 40-50, the temps were at 188, no AC. No smoke that I could see, even when at a stop light.

About 15 miles later (less than a mile from my house) it was like someone flipped a switch, smoke from burning oil pouring out the engine vent lid.

I finally get it home, when I pull in the garage I notice a spot immediately to the left of the rear passenger tire, so think directly under the engine, but then a little to the right.

Also, the whole back of the rear clam is covered in oil, it looks like it was sweating. I have a KG car, it's quite a sight.

Glancing under the car, from immediately behind the doors to the back diffuser, are soaked in oil.

The leak was so bad when I left, you can actually see where I backed down the driveway, onto the street and then drove down the street.

It just stopped smoking, so I'm hoping I can rule out the rear clam catching fire at this point.

It looks like the passenger's side rear tire has oil coming thru the spokes, none on the driver's side rear tire, it looks like the leak is on the right.

I'll update this when I know more, I do know that I probably can't afford to have anyone do the work for me right now, so I'll probably have to fix it myself or let it sit.

I'm going to go down and attempt to take the plates off and jack up the rear of the car, clean everything off and locate the leak.

If this sounds like anything you heard of before, feel free to let me know.

Update:

I have a 2006 Elise, 100% stock except for the 6 pack of RedBull stashed in the passenger's footwell.