This is all I found so far:
Ukraine LIVE: Horror as report Putin’s motorcade attacked with explosives rattles Russia: An ambulance blocked the leading car in Putin’s motorcade while another car dropped an explosive on the vehicle carrying Putin, according to a report on Telegram.
By Olivia Stringer, Aliss Higham
17:27, Wed, Sep 14, 2022 | UPDATED: 17:28, Wed, Sep 14, 2022
Vladimir Putin’s motorcade was attacked with explosives during a recent journey, unverified reports from Telegram have claimed. According to the General SVR Telegram channel, purportedly run by a Kremlin insider, one car blocked the front vehicle in Putin’s motorcade, whilst another car drove around the motorcade and dropped an explosive on the vehicle carrying the Russian President.
General SVR explained: “On the way to the residence, a few kilometers away, the first escort car was blocked by an ambulance, the second escort car drove around without stopping, a sudden obstacle, and while driving around the obstacle, the third car, in which Putin was, a loud bang sounded from the left front wheel followed by heavy smoke.”
The report claims that despite the explosion, the car carrying Putin managed to reach its destination. However, it adds that “the investigation into the incident and all information on it is classified”.
‘Heads should be on Putin’s desk!’ Kremlin fury over blistering Kharkiv loss
KEY EVENTS
Horror as report Putin’s motorcade attacked with explosives rattles Russia10:47
‘Heads should be on Putin’s desk!’ Kremlin fury over blistering Kharkiv loss07:34
It is a small decrease, but, the root of it (see “summary”) is interesting. Existing export transport (except to Europe) is already maxed out.