I use an Avtex badged Garmin...which does let us set the size of the outfit.
But an interesting story... So I had a service loan car from Volvo, which was one of the new Android Auto based cars. I set a route to Felixstowe, (from Colchester) and was surprised to find that the SatNav was not taking us North on the A12 and along the A14, but was proceding towards Harwich, and said we should take the Ferry (a foot ferry) from Harwich to Felixstowe! Riidiculous that Google Maps includes non-vehicular ferries.