The video got me a tad curious so I did some googling. I guess this video has been debated but it's still not known if it's real or a hoax. This was one man's opinion on the video.
a)the part where the vehicle crashed, if u noticed, there were no other vehicles, no obstacles on the road at all. the car was on a straight road, travelling at low a speed and all of a sudden, the car just overturned.
b)it seems like the camera had been 'dropped'(i have strong urge to use the word 'placed') at a deliberate angle. it is doubtful that the camera actually remained intact(and running), with not even a scratch on its lens. the camera's movement in this sense(a crash) is especially doubtful. the impact and manner of the 'crash' is also questionable.
c)the mobile phone image that kept appearing(and disappearing) and the slight 'pixelation' towards the end suggest that the video could have been edited.
d)as for the blurry effect/distortion when the 'ghost' entered the car. how i should i put it? u can try switching on/off your mobile phone(or make a call) right in front of a cam or even your PC monitor. see the effects. (Don't do this repeatedly, it damages your hardware component!) - this distortion, and the 'pixelation' towards the end, do not fit together. such 'pixelation' usually occurs on digital equipment or due to some 'post-production' glitches. by looking at the distortion, however, suggests that it was filmed using an analog equipment. (i won't go into details here.) hence, i strongly believe that this video is not the original/had been edited.
e)there are suggestions on other forums that this group of youths came from Brazil, not Portugal. (someone derived this from the variation of Latin which they used.)
f)a search on google and yahoo! did not indicate any official record of the 1983 accident in the first place. most sites found boil down to local belief, rumour etc. there is no concrete evidence to even suggest that the 1983 accident, or this video, is authentic. (i probably did a lousy search. if anyone finds anything, please provide the link here. thanks.)
g)personal experience and activities with paranormal groups have convinced me that it is unlikely to capture so-called 'ghosts'(in simple terms) in such solid human forms. it may appear to an individual as such but it is almost impossible to capture this on camera. in most instances, 'ghosts' are often captured on cameras as 'orbs', shadows, balls/flashes of lights etc.
h)last but not least, these are of course, my personal opinion. i'd very much appreciate any comments or links to sites that indicate otherwise. to start with i did not exactly make a 'statement'. i just voiced my doubts
Good video to post.