JimK gurgled happily, sounding much like they
were saying:

No. If it were just a bridleway by definition I wouldn't be legally
allowed to access my property by vehicle would I ?

If you own the land you can decide to permit higher rights than those
enjoyed by the general public. Notably granting yourself permission to
take a vehicle along it:-)

Erm are you saying I have to grant myself rights over my own property!?
********!

Not at all.

You don't have to follow any formal procedure to grant yourself rights,
just make a little promise not to shout "Git orf moi laaaand!" at
yourself whilst waving a shotgun in the general direction of yourself...