Stains from exhaust pipe

When I start my 30 pickup, there are black spots on the driveway , a discharge from the exhaust pipe. It is a mostly dry substance, with no smell, looks like soot from a fireplace. Any thoughts?

Thanks
 
Nothing to worry about here!

Ever started up your modern car and found a puddle of water in an odd spot under the car? It's just a build up of condensation in the exhaust system. Modern cars do it all of the time, in fact the mufflers often have a small weep hole so they can drain. That's all your car is doing, it's spitting out the built up condensation and taking some of the sooting build up with it.
 
Soot is GOOD! The only ones that don't make soot are the ones that don't run.
Your coffee's gonna get cold while you're worrying about soot.
 
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