This is what will happen if you try what this kid is suggesting--

First. You get ticketed with reckless driving.
Second. You get arrested for obstruction of justice.
Third. You get charged with illegal possession of a controlled substance (whether it's the real deal or not)

Fourth. You stay in the county lock up until you post bail or your court date.

Fifth. You go to court and hope your lawyer is better at proving that what you had was legal than the prosecutor.

Sixth. You get nailed with obstruction and reckless. Both of which are felonies. This is whether or not you are found guilty for possession.

Seventh. You never vote. You never get a real job. Why? Because your dumbass committed two felonies for no good reason.