1) After mission briefing, scene opens with PCs driving E-type Jaguar round winding roads headed for Monte Carlo.
Screech of tyres and red Ferrari 250 GTO appears from side road. Headlights lift up and machine gun fire sprays at the PCs.
Time for a quick Chase Dramatic Conflict. Remember to slip in a big truck coming the wrong way.
Most likely bad guys car ends up over the edge, rolling downhill in a ball of flame. PCs left to wonder if their cover is blown.
2) Dr. Bin Khatun is planning a meeting with the sub somewhere in the Med. He is awaiting contact with a member of the renegade crew during the party. There he will receive coordiates for meeting. BK has fast Super Yacht in harbour to get him to location.
3) Russians have assigned gorgeous agent Natalia Romanov and helpers to watch BK and follow him to sub.
4) After meeting BK, Contact panics and PCs have to chase him round Grand prix circuit, preferably during the race !!
5) PCs race BK to location. Fast speed boats, scuba gear, etc.
Just rambling but might be of use to you