OK, I'm biased because I am a total Dahl-aholic, so bear with me.
This is not the Dahl of "Charlie and the Chocolate Factory." This is the Dahl of the grown-up world. In this book, Dahl writes about his experiences flying for the RAF during WWII, including almost severing his nose off during a crash and various adventures in exotic locales.
As always, the writing is sensual without being dirty, descriptive without being overly wordy, and hilarious without being slapstick-y. Dahl's word choices always fascinate me, and his stories are so vivid that you feel like you're right there. Some adventures have a twist, a Dahl signature, and some don't.
If you're looking for a fantastic children's book, this isn't it. If you're looking for a fantastic adult book, look no further. "Going Solo" is an autobiography that reads like a novel.
A continuation of the life of Roald Dahl began in "Boy", this is a fascinating account of his travels and service in the 2nd world war. A wonderful read !