[sleepysnowflake]

pawn Код:

if(PlayerInfo[playerid][pCarLic] == 0) return SendClientMessageEx(playerid, COLOR_RED, "You're driving without a drivers license. Obtain one from City Hall!");

new rand == random(2);

if(PlayerInfo[playerid][pModel] == 299) {

As for the last warning: click CTRL+F, search for "new IsAtNameChange" and delete it, or just for "IsAtNameChange" and see if it's used within that function. Hope it helps.