I wonder if Cruz would accept; I think the desire to be President is pretty powerful with him.
-JT
The question then becomes if Trump could possibly win on November 8. That's an open question. Trump is so unpopular across the nation that he could even lose to Hillary in an orange jumpsuit. So on the one hand, if Trump could somehow win the general, being VP would set Cruz up nicely for being the next president. However, being the VP nominee on a losing ticket is almost a sure path to never becoming president. Only one man in the entire history of the country has ever gone from being a losing VP candidate to winning the presidency, and that was FDR.
I think he has expressed interest in being a US Supreme court Justice candidate. (It is for life so longer GIG).