If you would like to take the person who’d died on their final ride yourself, there is nothing to stop you from using or hiring your own preferred vehicle and taking them in that.
Drive down to the undertaker’s, load up and off you go.
This way, you can go by any route you want and spend all the time you want – so long as you get to the church or crem on time.
Be sure to have enough people to carry the coffin.
And be sure to secure the coffin in the vehicle.
You don’t want it surging forward when you brake.