A load of spilled butter caused a traffic mess on the 10 Freeway through Banning on Friday.BANNING, Calif. (KABC) -- A load of spilled butter caused a traffic mess on the 10 Freeway through Banning on Friday.The big rig overturned before 7 a.m. in the westbound lanes at the 8th Street overpass. The truck's driver and passenger were injured.No other vehicles were involved in the crash.The on-ramp was closed for hours. Report a correction or typo