hi fred, yes a very good machine which is powerfull enough to be van mounted,these machines are custom made to the users spec and hav loads of options, they do hav heavy duty 3 stage vacs but with a 400psi pump motor u can only hav one heavy duty and one standerd 3 stage as the power draw is to high but they do an add on 3 stage vac which connects to the exhaust of machine and has its own power lead ,they make big claims about this 3rd vacs increase on suck but havnt seen one in use so cant comment
the v2 3000w heaters are a god send for carpet cleaners and work very well but no machine will clean up chewing gum alone no matter how powerfull or hot u will need chems and sweat for this ! ashbys make a special chewing gum wand for use wiith the v2 heater but i very much doubt it works , if they are selling u machine saying it will cut through chewing gum with ease ,and thats what u want machine for , walk away !!
gary