This is a quick way to do it, it'll just make the car move towards the player and won't necessarily make it dodge obstacles
function serverCmdSummonCar(%client) {
%car = // You choose how to figure out which car to summon
sendCarToPlayer(%car, %client.player);
}
function sendCarToPlayer(%car, %player) {
// Grab their position
%carPos = %car.getPosition();
%playerPos = %player.getPosition();
// Subtract them and normalize it
%vec = VectorNormalize( VectorSub(%carPos, %playerPos) );
// Apply velocity
%vel = VectorScale(%vec, 30);
%car.setVelocity(%vel);
}