A van has been caught on camera struggling to navigate the roads through Arthurs Pass.
The silver Hyundai, which Newshub understands is a rental vehicle, can be seen crossing the centreline numerous times while other cars were oncoming.
The video was shot on Saturday afternoon and shows the van struggling to take corners. The driver is also seen braking a number of times while driving in a straight line.
The driver spends a total of 30 seconds driving over the centreline during the one minute and 40 second-long clip.
Watch the video.