Je déterre peut être le topic, mais visiblement d'après Rockstar, il suffit d'acheter un slamvan standard puis de le modifier chez Benny pour obtenir la dépaneuse :
"that car is not available in online with that livery as a towtruck You can buy the normal slamvan via the internet on your cellphone at Southern San Andreas Super Autos. You can now use that slamvan to enter Benny's and do a sick mod build off there. "