Snuggled up in Model T sent over (7)
I believe the answer is:
nestled
'snuggled up' is the definition.
(I've seen this in another clue)
'in model t sent over' is the wordplay.
'in' indicates the answer is hidden within the clue.
'over' shows that the letters should be reversed in order.
'deltsen' is hidden in the letters of 'model t sent'.
'deltsen' in reverse letter order is 'NESTLED'.
(Other definitions for nestled that I've seen before include "Curled up" , "Huddled together" , "Lay snugly" , "get comfortably ensconced" , "Settled comfortably, against, in something" .)