A bit similar issue: is it just me, or is it a scientifically proven fact, that when riding a mountain bike the drivers seem to give you more room and are more patient, while being on a road bike is like a red flag to a bull?
Its because its generally children that ride mountain bikes, or fat people, so drivers give them more room – they don’t want to hurt kids or have fat folk denting their cars. Grown ups ride road bikes so drivers know they can look after themselves and because no ‘roadie’ is fat, damage to the car would be minimal.