Another blast of wintry precipitation is heading towards the Chicago area, so weather permitting we'll have another round of submerged vehicles for next week (and might even venture away from the lake for a fun variety of cars built before 1990). Today's quest isn't that challenging for the veterans out there, but the common shapes should make for a lot of debate. We'll give you a hint: It's not an Isuzu I-Mark. Let the games begin:

We even sized the photo a little larger, because we care:

What is it?