A melech and a malka should be driven in style.
Is it lip service to say chosson domeh l’melech?
A levayeh is stopped to allow the chosson-kallah entourage to pass!
You think the chosson should drive the kallak himself in the beat up family-car?!
A melech and a malka gets chauffeured in a limo!
That’s poshut!
And while we are at it – rabbonim are also called melochim (‘maan malka – rabbonon), so every rov and rosh yeshiva should be driven in a limo like royalty, but in this WE lack the acceptance of rabbonon as melochim. That’s OUR chisoron, and the rabbonim don’t expect too much of us, so they are mochel. [Not sure about din of ‘melech she’mochal al kivodo’ if it applies to rabbonim or chassanim].
For a moment I thought you were talking about the limos for the bochurim collecting on purim getting driven around in a limo. Now THAT is another whole ball of bees wax.
But that is v’na’hapoch hu – the bochurim are chauffeured in limos while the rosh yeshiva drives around in a jalopy.