Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.

Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.

Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.

Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.

Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.

Unsuspecting members of the public hail a cab and find they're playing for thousands of pounds; if they can keep answering questions correctly before they reach their destination.