You have managed to get on the wanted list for the police and now they are sending a faster police car after you.
The SBR is much faster than your 200BX though you have the power of the "all mighty wing" on your car.
You will need to get to your safehouse over the ocean before you are busted - there is makeshift bridge to allow you to get there. Follow the main road and you should see where you need to go.
Be cautious - going overroad may seem quicker but some areas are steeper than you think and will easier break a wheel axle or two.
Good luck!