My BMW did just that: if the battery voltage decreasde under a specific threshold (when the engine was off), any light was switched off.
A good idea, anyway.
...sometimes I publish ideas that I think have potential (at an early stage, of course) on my blog: if they get commented, then there is REAL potential...
Take inspiration from Ikea: they don't sell cheap furnitures and home accessories, they "democratize" design.
Make it AFFORDABLE, not low-cost !
How to do it? Don't sell a product, sell/tell a story, become an experience.
And, most important, find yourself an enemy - e.g. a competitor, bad design, unreliable products, high prices, copycats, etc.
In my opinion:
1) Frequent updates
2) Some nice (but not big) images
3) Using LinkedIn groups as "loudspeakers" - especially if your blog is business-oriented or technical
AC