Answer: smashup

AnswerCrossword Clue
SMASHUPBreak to bits.
smashupa collision of motor vehicles
smashupcomplete smash, esp. a wreck of one or more vehicles
SMASHUPInterstate misadventure
SMASHUPFreeway closer
SMASHUPCollision
SMASHUPMajor wreck
SMASHUPBad traffic accident
SMASHUPMultivehicle collision
SMASHUPRear-ender, maybe
SMASHUPBad car collision
SMASHUPCollision.
SMASHUPWreck
SMASHUPAuto mishap
SMASHUPFreeway mishap
SMASHUPRoad clogger
SMASHUPBad accident
SMASHUPBig accident
SMASHUPSerious collision