In about one day you’ll get there by car (4)
I believe the answer is:
ride
'get there by car' is the definition.
'ride' can be an answer for 'get' (thesaurus). I am not certain of the 'there by car' bit.
'in about one day you'll' is the wordplay.
'in' indicates putting letters inside.
'about' becomes 're' (regarding).
'one day you'll' becomes 'id' (I can't justify this - if you can you should believe this answer much more).
're' placed around 'id' is 'RIDE'.
Can you help me to learn more?
(Other definitions for ride that I've seen before include "Eg, roundabout or roller-coaster, path for horses" , "Go by horse" , "Jaunt" , "Go by bicycle" , "badger" .)