UPDATE:
I didn't hear from Khamp on the 19th trade.
F1Addict already sent his car for the 20th trade.
So a day would not go to waste, I have sent F1Addict his car first.
If Khamp returns he will go today and the schedule will proceed normally.
If not, then I will be able to trade a day earlier with anyone who wants to.
I'll keep you guys in the loop.
Thanks.