No Crin, the clue is the word Tiverton. What you saw was a negative reality inversion and the bike you saw was the negative reality Crin converging with you. You probably didn't see it in your mirrors as it didn't really pass you just re-integrated with with your reality at a quantum level. It was in fact the anti Crin. The actual event horizon where the two of you merged is the only spot in Tiverton where it is possible to conceive a child with only 5 digits per extremity.