Most LPG cars I’ve ever encountered were Commodores and Falcons (both factory and aftermarket).

Even though now, more than ever, with the increased size of vehicles on the road (thanks to the massive uptick in US-style „trucks”) LPG conversions make sense on paper - there are a LOT of pain-points:

1. Upfront cost of conversion is high
2. Requires an additional fuel tank, taking up precious room in trays
3. Difficult to find servos that still carry LPG
4. Fuel capacity is lower, requiring fill ups more often - especially as usage rate is ~20% higher per 100km
5. The rotting cabbage additives added to make leaks noticeable
6. Connection can be a pain in the ass to screw on when filling up
7. Reductions to torque and horsepower can make vehicles feel sluggish

I’m sure there are a bunch of other reasons I’m missing just off the top of my head.

Honestly, for people who live in other suburbia and can’t get by on public transport, a switch to a combination of pure EVs, PHEVs and/or hybrids where the engine is purely a generator would be a much better long-term solution.