[MadeMan]

You must check if player is in a car and only then show him the fuel bar.

You can use this function:

pawn Код:

IsCar(vehicleid) 
{
    switch(GetVehicleModel(vehicleid))
    {
    case
    416,  //ambulan - car
    445,  //admiral - car
    602,  //alpha - car
    485,  //baggage - car
    568,  //bandito - car
    429,  //banshee - car
    499,  //benson - car
    424,  //bfinject,  //car
    536,  //blade - car
    496,  //blistac - car
    504,  //bloodra - car
    422,  //bobcat - car
    609,  //boxburg - car
    498,  //boxville,  //car
    401,  //bravura - car
    575,  //broadway,  //car
    518,  //buccanee,  //car
    402,  //buffalo - car
    541,  //bullet - car
    482,  //burrito - car
    431,  //bus - car
    438,  //cabbie - car
    457,  //caddy - car
    527,  //cadrona - car
    483,  //camper - car
    524,  //cement - car
    415,  //cheetah - car
    542,  //clover - car
    589,  //club - car
    480,  //comet - car
    596,  //copcarla,  //car
    599,  //copcarru,  //car
    597,  //copcarsf,  //car
    598,  //copcarvg,  //car
    578,  //dft30 - car
    486,  //dozer - car
    507,  //elegant - car
    562,  //elegy - car
    585,  //emperor - car
    427,  //enforcer,  //car
    419,  //esperant,  //car
    587,  //euros - car
    490,  //fbiranch,  //car
    528,  //fbitruck,  //car
    533,  //feltzer - car
    544,  //firela - car
    407,  //firetruk,  //car
    565,  //flash - car
    455,  //flatbed - car
    530,  //forklift,  //car
    526,  //fortune - car
    466,  //glendale,  //car
    604,  //glenshit,  //car
    492,  //greenwoo,  //car
    474,  //hermes - car
    434,  //hotknife,  //car
    502,  //hotrina - car
    503,  //hotrinb - car
    494,  //hotring - car
    579,  //huntley - car
    545,  //hustler - car
    411,  //infernus,  //car
    546,  //intruder,  //car
    559,  //jester - car
    508,  //journey - car
    571,  //kart - car
    400,  //landstal,  //car
    403,  //linerun - car
    517,  //majestic,  //car
    410,  //manana - car
    551,  //merit - car
    500,  //mesa - car
    418,  //moonbeam,  //car
    572,  //mower - car
    423,  //mrwhoop - car
    516,  //nebula - car
    582,  //newsvan - car
    467,  //oceanic - car
    404,  //peren - car
    514,  //petro - car
    603,  //phoenix - car
    600,  //picador - car
    413,  //pony - car
    426,  //premier - car
    436,  //previon - car
    547,  //primo - car
    489,  //rancher - car
    441,  //rcbandit,  //car
    594,  //rccam - car
    564,  //rctiger - car
    515,  //rdtrain - car
    479,  //regina - car
    534,  //remingtn,  //car
    505,  //rnchlure,  //car
    442,  //romero - car
    440,  //rumpo - car
    475,  //sabre - car
    543,  //sadler - car
    605,  //sadlshit,  //car
    495,  //sandking,  //car
    567,  //savanna - car
    428,  //securica,  //car
    405,  //sentinel,  //car
    535,  //slamvan - car
    458,  //solair - car
    580,  //stafford,  //car
    439,  //stallion,  //car
    561,  //stratum - car
    409,  //stretch - car
    560,  //sultan - car
    550,  //sunrise - car
    506,  //supergt - car
    601,  //swatvan - car
    574,  //sweeper - car
    566,  //tahoma - car
    549,  //tampa - car
    420,  //taxi - car
    459,  //topfun - car
    576,  //tornado - car
    583,  //tug - car
    451,  //turismo - car
    558,  //uranus - car
    552,  //utility - car
    540,  //vincent - car
    491,  //virgo - car
    412,  //voodoo - car
    478,  //walton - car
    421,  //washing - car
    529,  //willard - car
    555,  //windsor - car
    456,  //yankee - car
    554,  //yosemite - car
    477  //zr350 - car
    : return 1;
    }
    return 0;
}

And you can use it like that:

pawn Код:

if (IsCar(GetPlayerVehicleID(playerid)))