Car wash?

[Sammy]

I know, I know, I should always hand wash my car but unfortunately my birthday brought a big surprise (yes, it happened on my birthday) in that my daily driver was broken into and the stereo stolen (literally they shattered the driver window to get in). I expect the vehicle to be in the shop for a couple days and I'm going to be looking to Nicole to drive for a few days. I was hoping to wait for warmer weather and the salt rinsed off the roads, but I don't see a better option (rental car seems a bit dumb since the snow is gone). For you guys that drive year round in the Chicago area what do you do to keep your car clean? It's one thing to hand wash the exterior with the Optimum No Rinse but I'm hoping to use an automatic car wash to clean the underside? Where do you guys go? What type of car wash should I be looking for? Or should I just go to one of those quarter high pressure places to clean the underside and then hand wash the exterior?

I may be able to find a better alternative, but I'm also interested in a good way to clean the undercarriage regardless.