### Clue: Vehicle with endless job when reversing gets driving aid (6)
### Answer: SATNAV 
 ### Explanation: Definition: driving aid
 **Reversal of**(… when reversing) [ VAN(a motor vehicle) **plus**(with) "task"(a job/a piece of work) **minus ****its last letter**(endless) ].
Defn: Short for "satellite navigation", a system of computers and satellites used, in eg. cars to show where one is, and how to get to places.