The video of the women getting into the store to rescue? I saw it too, gosh if it isn't terrifying. These types of incidents could be prevented with the use of bollards and a bit more police security in these areas. Also when any truck is reported stolen put the police and population on high alert. IMO these types of happenings are the last resort terrorists have, as many are caught when they're dealing with bombs and guns. Sadly, this is a easier way for them to not get caught, while there aren't measures for it still.
What is most shocking is that this happened on one of the most populated streets in Stockholm.