Yesterday, i managed to break the license number plate of my car. I admit it was my fault that i did not notice the bike parked behind my car. I could not see from my rare view mirror as the bike was parked using the side stand. It was totally not visible in the mirror causing the accident. Whom should i blame? Me/Guy Who parked the bike/The car manufactures ?. I know it has to be me, but i think the car manufactures must start having this beeping sensors in the rare, to identify any objects not seen through the mirror.