This area is no "greener" than most other places in Melbourne.
Huh? Obviously you have never been to Tecoma. Green is the predominant colour in the area, it is teeming with native flora and fauna. It's the start of the Great Dividing Range, very similar to the Blue Mountains in NSW. Basically there is little green at all west of the CBD right through to SA.
When most people talk about an area being 'green' or 'hippy' (which are two different things) they're not referring to the car to household ratio. On that measure, Melb CBD, Docklands and Southbank would be our 'greenist' suburbs.
Yes, the BP does sell junk food, but you're just being difficult if you claim to not see any difference between that and a McDonalds. Most kids would stay in the car and not even enter the BP, McDonalds sells toys with the meals, etc. McDonalds contributes a far greater amount to our heart disease / obesity levels than petrol stations do.