I have been setting up all my trucks for about 10 years with a set of train horns under each side of the bed and amed forward twards the ground at 45%. They are tied to the alarm so when it goes off all they want to do is get away from it. A ten gallon air tank will blow for several minnets. There are several good 12 volt aircompressers on the market which gives you on board air for tire inflating.