I know there is touchless car wash products. You spray it on and will suds up and break down dirt without having to touch it. Then you can wash it all off and possibly repeat and you should have almost all the debris off safely. I think you will eventually have to break down and touch it with water. If you really wanna avoid water on it a air pressure "wash" may work; I'm afraid on those that the dust will grind in the paint, but I'm probably just ridiculous.
1998 Bright Atlantic Cobra - 3:73's, BBK ls, Pro 5.0, 96 Cobra STB, Borla XR-1 Catback, Custom Catch Can, Spec clutch, MM Firewall adj, FRPP wires, RSD, Spoiler delete, 245/275 BF Goodrich g sports on chrome 95 cobra r's
1998 V6 Mustang : SOLD!