The Race of Champions, which was scheduled to take place in Thailand later this month, has been cancelled due to safety concerns.
In recent days the unrest in Thailand has been mounting with protestors wanting to overthrow the prime minister.
Violent clashes on the streets have led to the Race of Champions' organisers opting to cancel this year's event.
"The Sports Authority of Thailand and the organisers of the 2013 Race Of Champions have announced that the event cannot take place as planned on December 14-15 due to the current political situation in Bangkok," read a statement.
"Our thoughts are with the Thai people during this difficult period and we wish that a peaceful solution will soon be found.
"The Race Of Champions has been held all over the world for 25 consecutive years and we are currently looking at options of repeating the success of last year's event in Bangkok on another date.
"Fans who have already purchased tickets for this year's Race Of Champions should contact Thai Ticket Major or their ticketing agent for further information on refunds."
The RoC was expected to take place at Bangkok's Rajamangala Stadium on December 14-15.