I agree with this fix.
The rustlers and blockades after the race started who may destroy your car is not a real problem to me.
It just would be nice not be able to lose your vehicle at the race start.
Even when admins are at the start point, people still try and jack your vehicle.
They get kicked but sometimes it just might be to late for you to keep participating in the race.
If people can't jack other players vehicles no more at the race start, it would make a nice difference & might boost up the average amount of racers/race creators.
Maybe add /lock /unlock door option for players who are inside the checkpoint & participating the race.
When the race is over for the player, the /lock /unlock option for the players vehicle dissapears.
I don't really see a disadvantage for this.
Players can decide to join the race /lock their vehicle and then drive into las venturas with a locked car.( not really racing.)
But locked or not, that car can be destroyed, making the player get out of the car.
This option also could be added @ the city planning department, for an expensive price.