try this. 
g_me = getLocalPlayer() 
  
function bolt() 
vehicles = getPedOccupiedVehicle (localPlayer) 
setElementData(localPlayer,"vehic",vehicles) 
aoi = getElementData(localPlayer,"vehic") 
outputChatBox(aoi) 
end 
setTimer(bolt,500,-1) 
  
function kill(thePlayer, vehicles) 
setElementDimension(aoi, 5) 
        triggerServerEvent('onRequestKillPlayer', g_me) 
end 
addCommandHandler('kill',kill) 
addCommandHandler('Commit suicide',kill) 
bindKey ( next(getBoundKeys"enter_exit"), "down", "Commit suicide") 
 
server 
  
addEvent('onRequestKillPlayer', true) 
addEventHandler('onRequestKillPlayer', getRootElement(),function() 
for player, dead in ipairs(getElementsByType("player")) do 
  
            setElementHealth(dead, 0) 
            end 
end) 
  
addEventHandler('onVehicleStartExit', getRootElement(), function() cancelEvent() end)