On converting your vehicle from using petrol to using CNG:
* CNG is like gas used in car AC, very safe even in hot weather.
UAE sun is (4) four times hotter than the sun we have Northern Nigeria yet they use CNG cars. The only downside is the installation cost. In Edo state especially Benin its done for about 350k to 450k depends on the weight and size if your car but at the end you will be the one who will enjoy it the most, because 1kg of CNG is like N200 Naira now and 12 kg is equivalent to full tank of petrol. Imagine that? Thats like N2, 400 Naira for full tank.
That's why you find more cars in Benin using CNG... It's all common knowledge. This is very common in Benin Republic. They've been using it for the past few years. Few Nigerians have been using it too. Conversion used to cost about 400k- 500k but due to high demand now as a result of fuel hike, the price has doubled.
This is Nigeria, it has already increased. It will increase further as demand keep rising.
This is also risky. CNG is for factories or demands with no access to pipeline networks because they are transported by CNG tubes which are highly inflamable. The higher the distance the higher the rate.