[alexandertorres]

Hi!

First off, thanks for the reply.

That CNG is safer than LPG is debatable. You can find a lot of crash tests using LPG tanks, both cylindrical and toroidal in shape, and the car comes away worse.

LPG vehicles are now allowed in closed parking spaces as long as:
A) They've had a special vehicle inspection that certifies their LPG kit is up to scratch and
B) The underground parking lot allows it.

The big problem before was how very little underground car parks complied with the law in terms of ventilation, so the government, in its wisdom, instead of enforcing the legislation and making car park owners and builders ventilate their parks properly, chose to ban LPG vehicles from parking there. Thankfully, this is changing.

I was in Brazil recently and was flabbergasted to find out diesels aren't allowed in passenger vehicles. At least you have ethanol, which is good.