No Sir. You may not search my car.

 This is why you never consent to a search.

1. Cops ask to search your vehicle
2. You consent
3. Cops find bag of coconut
4. Cops throw you in jail for 5 days waiting for drug lab results showing it is not crack cocaine

Knowing and using your rights protects you from harm brought on by those with power. It makes no difference whether they intend to harm you or not. Often its done ignorantly with good intentions.

<HT: Flex Your Rights>