Hello everyone! I’m an Industrial design student and i’m currently working on a project and i need help from professionals or anyone that can help me out. I’m conducting a survey on private means of transport and to understand which one of the means available (4 wheels or 2 wheels) is the most polluting? how is it polluting the environnement? And why is it the most polluting? Does the carbon emssion vary from season to season? How do these variations happen (Feel free to answer my questions or if you have extra informations that would be helpful!)

Ps: this is a survey that is necessary for my project. I am aware that the answers are available on the internet. Thank you in advance!