### Clue: I got your message and I'm heading up in limo (5)
### Answer: ROGER 
 ### Explanation: Definition: I got your message
  Reversal(*heading up*, in a down clue) of EGO(*I*) in RR($$R$$olls $$R$$oyce, the luxury *limo*usine).  Defn:  Term used in radio communications to signify *I*'ve understood,*got your message*.