An ex-soldier who suffered from PTSD took his own life by stepping in front of a lorry on the M20, an inquest has heard. Robert Charles Keith was driving on the motorway near Ashford when his car crashed into a ditch. But the 38-year-old – who was much-loved but “didn’t realise his self-worth” – then chose to end his life and walked into oncoming traffic. Giving evidence at Mr Keith’s inquest last Friday, DC Ryan Alexander reported the testimony of eye-witnesses to the tragic incident near the bridge by Evegate Business Park in Smeeth. “The car was in a ditch at the side of the road, very dama…