Vehicles that run on fossil fuel emit numerous air pollutants, and transitioning from conventional vehicles to their electric counterparts within a transportation fleet significantly reduces overall emissions. Electric vehicles are now an economically viable mode of transportation with decreasing cost of batteries, increasing power output, and rapid expansion of charging infrastructure. Electric vehicle routing problem (EVRP) aims to create routing plans for customers using a fleet of electric vehicles with diverse battery constraints. This paper proposes a new mathematical model for solving simultaneous pickup and delivery vehicle routing using a heterogeneous electric and fossil fuel vehicle fleet. The model is tested on logistics partner data using a standard CPLEX solver.