How do you design a scalable EV platform architecture for multiple vehicle types?

Scalable EV platform design includes: Modular battery system with common cell/module allowing variable pack sizes, flexible wheelbase and track adjustment (front/rear hard points designed for range), motor mount interfaces supporting multiple power levels, common electrical architecture with configurable features, thermal system sized for largest variant with simplified variants possible, and crash structure adaptable to vehicle size. Key decisions include single vs dual motor support, 400V vs 800V, and level of regional variation. Platform should span 2-4 vehicle segments (e.g., sedan, SUV, crossover) with 70-80% common components. Business case includes development cost amortization and manufacturing efficiency.