What an amazing story, with a horrible end. As an ex Capetownian, I know those roads so well, and was riding along in memoryland when Bam!, rude awakening. Glad you are OK, please continue to update us. Oh how I miss those roads.
Another dumb question? Approximately how deep into the straight pipes do you find the bits that need drilling, and do you angle the drill bit down the curved pipes, or do you just drill straight in?