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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Hobbyist's racer 7 letters:

SLOTCAR: Hobbyist's racer
SLOTCAR: Hobbyist's miniature racer
SLOTCARS: Hobbyists' racers
NITROCARS: Hobbyists' racers controlled remotely