How could i convince my mum to get me a scooter//motorbike?

My mum used to ride a scooter when she was 16 and when i use that against her she sais that the population of the city has madly increased and that people drive like madmen. I just want to buy this cheap chinese bike (http://www.onmywaymotor.com/mwm03-wholesale-motorcycles.html). I just need it to go to school and to meet up with my mates late and all that. My mum knows i will drive responsibly and that i would always wear protection gear, but she's afraid some crazy drunk idiot would crash into me. How do u think i could convince her?