Related Clues:
- Shell of a crab, tortoise etc.
- Shell hitting vehicle going quickly
- Shell motor at full speed
- Hard top vehicle having a measure of speed
- Protective shell of automobile at speed
- Quickly following vehicle, hardtop?
- Hard top in vehicle put on quickly
- Shell makes vehicle fast
- Shell makes vehicle fast!
- Hard top makes vehicle fast
- Shield quickly attached to vehicle
- Vehicle takes a step to become a hardtop
- Vehicle rapidly becoming a shell
- Shell in vehicle that's shifting quickly
- Hard top of vehicle put on rapidly