If I put some rechargeable D batteries in a hybrid car and let you plug it in and charge them (for 1 kWh of storage, say) at around 10x the cost of a non-plugin

If I put some rechargeable D batteries in a hybrid car and let you plug it in and charge them (for 1 kWh of storage, say) at around 10x the cost of a non-plugin-hybrid, you'd be upset if I advertised that as a plugin hybrid car, right? It is, but it's not. Same with the solar panels on this thing.