The government is investing heavily on modernizing the roads right now, but it's a little hard to imagine how bad the roads are. Here's a video that's pretty representative of roads throughout much of the country:

https://www.youtube.com/watch?v=VTC2w860HKo

Now, there are some stretches of very modern highways and the road system is improving fast, but still getting around takes a long time due to heavy traffic, animals crossing the road (or just standing in the road), large amounts of foot traffic along and across the road, etc.

I have a hunch that even the most efficient electrical engines would have a hard time maintaining efficient operation with all the starting and stopping.