webERP will work exceptionally well in a van sales environment.
Being web based it will work on any device that will connect to the internet and support a web browser.
Each van can have its own stock location which can be downdated for all sales completed.
Invoices can either be printed directly or e-mailed to customers for printing.
Stock replenishment requirement can be identified befor the van returns to base.
Because webERP is open source there is no cost incurred in adding more users online.