single one line drawing motorcycle sport helmet. racer helmet logo. motorsport car kart racing transportation safety concept.

artwork background bikers concept continuous line curl design doodle drawing equipment fiber formula gear graphic hand drawn headgear helmet isolated leisure vector lines minimalism modern motor motorbike motorcycle motorcycling motorsport object one pattern professional protection protective race ride safe safety security silhouette single sketch sport sports swirl transportation visor helmet racer logo car kart racing concept style draw