Ideas

With these pointers and a general idea of the direction of our trailer we devised some ideas.

IDEA 1:
Main gang: group of middle aged teen kids.
One of the teens gets dared to smash a car window
He gets caught as there is an unseen person inside
The driver chases the boy down through streets and traffic and catches him
The driver (gangster) gets the teen involved into the gangster lifestyle and he grows up as the runt who turned out to be a stereotypical British gangster

IDEA 2:
A man hires a car from a car hiring showroom
That car was previously used to store, transport illegal drugs
The drugs were left side and the agency collected the car
The gangster’s lose their goods and set out to retrieve them
The new driver is just an innocent man who is unaware of the cars inviolvement
The gangsters track him down and give him trouble as they think he is playing dumb, he is simply confused and unaware
The hire car owner has retrieved the goods and they eventually track them back to him
The victim takes some sort of revenge