How can he end up driving a hire Lambo with no insurance? I presume his mate must have hired it and then lent it to Khan?
From what I understand it's usually the case of the person wanting the car (in this case it would be Khan) but cannot obtain the car for hire due to credit/driving history so someone who can hires the car and then when out of sight of the hire firm, hands over the car.
Similar has been uncovered with a few drivers in my area when pulled over and it's been found that the car (usually high-power hatchbacks like Golf R etc) was actually leased by an older family member and put the driver on as a named driver. Except the lease holder never drives the car which invalidates the lease & insurance.