Not even close. A car is way much more than a motor and 4 wheels, specially in 2019. You need suspension, aerodynamics, an infotaiment system, seats, air conditioning, doors (dont understimate this one), a music playback system, a good display for the driver... And this in a cabin that can confort people from temperatures and noise from the outside. Making a decent car in incredibly difficult. + Safety features required for the current standards.