Yasuyuki Tagashi, 49, was delighted and offered Bt18,000 as a reward to the driver, Thirapong Phuphan.
Thirapong arranged the return of the cash and documents via the Traffic Radio Society.
The Japanese tourist said he was on his first trip to Thailand and was very impressed.
“I will definitely encourage my friends to visit Thailand,” Tagashi said.
He added that he in fact did not even remember where he had left his bag.
The Nation