I have been reminded of one of the first ever articles I read on African history as an undergraduate: "Remembering Du: An Episode in the development of Malawian political culture" in African Affairs 97:369-396 (July, 1998). For those without access to the article it looks at the death of Dunduzu Chisiza and how "car accidents" involving significant political rivals have become a significant factor in the politics of not just Malawi but in many other African countries. Coincidence can be all too convenient.
Zimbabwean politicians who have died this way include (again, thanks to a comment by David Boothroyd):
* Josiah Tongogara (December 1979), single car crash in Mozambique. He was the leader of the anti-Mugabe faction in ZANU which wanted to run a joint election campaign with ZAPU.Understandably the Movement for Democratic Change are launching their own investigation into this incident. (BBC News: MDC to examine Tsvangirai crash) Many will be hoping that this was a genuine and tragic accident, but I hope this does not lead to the investigation being fudged. Truth must not be sacrificed to convenience.
* Rufaro Gwanzura (August 2000), car crash in Zimbabwe. MP for Marondera West.
* Border Gezi (April 2001), single car crash on the Masvingo road. Minister for Gender, Youth and Employment with a large following among young members of ZANU-PF.
* Moven Mahachi (May 2001), single car crash in Zimbabwe. Minister of Defence and popular among the armed forces.