There are several families of automotive temperature range AVRs listed on the Atmel Web site, in particular Tiny25/45/85 and Mega48/88/168. Posted datasheets indicate that these will be T, T1, and Z suffixes on the part numbers.
I cannot see any of these models listed at the distributors. The closest is a weird "X" suffix for Tiny45 at DigiKey.
Does anyone know if/when these will be "real"? We have an outdoor industrial app where the extended temperature range would be a "good thing".