Was looking for posts about trucks and this came up. I forgot how over-the-top crazy some of this stuff was.steal tanker trucks, half and half size, full of stuff that makes poison gas when mixed. Pull it into DC, upwind of Congress. Charge to rupture both tanks, at their closest points. Set "no-tamper" device, timer for 30 seconds, leave upwind on little scooter that you had on side of truck. BET it'd have a MAJOR effect, successful or not.
Never mind all the failure points almost inherent in this craziness. First & most elementary would be the simple reality that you can't hardly go a mile down a major road without being on camera even in most rural areas - in DC, you'd be on thousands.
Then there's the sad reality that the guy proposing mass murder this way has a documented, multiple-decade history of meek surrender, with absolutely zero record of desperado Billy-Badass crimes. So many levels of 'sad' here.