What is the difference between GMAC's ComTRAC Lease and Commercial SmartLease?

ComTRAC Lease Commercial SmartLease Lease / Vehicle titled in GMAC's Name Lease / Vehicle titled in GMAC's Name Customer must use for business purposes more than 50% of the time. No usage stipulation. Product allows for specialized upfits or abnormal depreciation. Specialized upfits and abnormal depreciation may not be available. Customer can set their own residual value. Residual can be as low as 0%. Customer does not set residual value. No mileage concerns. Customer must pay over-mileage penalties, if any. No excess wear penalties. Customer must pay excess wear and tear penalties, if any. Open-ended Lease / Customer responsible for residual value at end of Lease. Closed-ended Lease / Customer not responsible for residual value at end of Lease. No Security Deposit required. Security Deposit may be required. Maximum term available is 60 months. Maximum term available is 48 months. $250 Disposal fee / ($500 Medium Duty) No Disposal Fee.document.