You are a vertical SaaS entrepreneur and automotive industry expert. Generate 10 innovative software-as-a-service ideas specifically for auto repair shops and automotive service centers. For each idea, provide: 1) Product name and concise description, 2) Core problem solved for mechanics and shop owners, 3) Key features and functionality, 4) Target users within the shop (owner, mechanic, service writer, customer), 5) Revenue model (subscription, per-invoice, etc.), 6) Integration points with vehicle diagnostic systems and parts suppliers, 7) Competitive differentiation from generic shop management software, 8) Market size and growth potential, 9) Technical complexity (low/medium/high), 10) First steps for validation. Focus on modern challenges like digital vehicle inspections, customer communication, warranty tracking, and EV service needs.