I agree that the best we can do is slow down the rate of oil and gas burning. Unfortunately, slowing it down does not help (unless to very
low levels), temperature rise depends on the total amount of emissions not their rate, see for instance RealClimate.org.
Plug-in hybrids are one of the few ways of cutting emissions from transport which are even remotely feasible. With a lot of look and a following wind we might be able to cut transport emissions be 80% in 30 years if there were fuel efficient cars running most of the time on renewable electricity and the rest on biofuels. Until lithium ion batteries are available (6-7 years at least, followed by another 10-20 years production build up) LiMH are the only "available" batteries for plug-in hybrids, they aren't actually available because they cannot be manufactured because of patent issues.
I don't know the best way of future electricity generation for developing countries, could be solar electric, wind, or even nuclear or coal with carbon capture and storage, what I do know is that it will have to be a mix suitable to circumstances and that even if electricity generation were 100% carbon neutral that would only solve 30% of the problem.
If the rainforest is cut down, the soils tend to release their stores of carbon, which is aproximately as much as above ground, some of the wood cut down will last hundreds of years, but most will be burnt or decay within decades, remember is it total amount that matters not rate, so releasing it over 50 years is no better than buring all the forests down next year.
Most tropical forests are not farmed, they are replaced by agriculture, which stores far less carbon dioxide.