How do I convince my parents about this car?

try explaining to them a 1.3 fiesta is quicker tell them the cars is just a lookalike and you couldn't possibly race anybody cause you would get blown away so you wouldn't even try cause it would just be an embarrment you know as well as i do the fancy looks dont make your car more powerfull infact in small cars like a polo it has the opposite effect (all blow and no go ) tell them to look it up online