Absolutely, and that is why I find the woke and wandered theory to be so compelling. A child of three hit by a car will sustain head trauma since their head is at the same height as a cars bumper/bonnet. Blood loss does not always occur in blunt force RTA's so that would explain why no trace was found.
The speed of traffic on the streets adjacent to Ocean Club Garden complex was probably about 20 mph so screeching brakes is a non starter.
I think it is is implausible that Madeleine wandered off on her own and was hit by a vehicle.
If she had left via the front door, despite the darkness, and walked round the building using the route followed by the sniffer dogs, there was no vehicular access.
Had she left by the patio doors the first lighted area was at reception a few yards downhill and she would have headed there without having to cross the road.
If she had been hit by a slow moving vehicle it didn't necessarily have to have been a fatal collision as can be seen from the following article from a driver involved in a collision with a three year old child.
** snip**
In an instant, a few yards in front of me was a small child. He was followed by an adult. I remember thinking "WHAT THE..." and then
reflexively hit my brakes. The car skidded and I ran into both of them.
The child flew through the air, caught in the beam of my headlights. I didn't see the adult.
Traffic stopped behind me and on the other side of the road ahead of me. For a few seconds everything was still. The child, who looked about three years old, was crying in a heap a few yards in front of my car; the adult had been thrown further.
** snip**
I was then told that no action would be taken against me and I was taken home by one of the young policemen. He told me to ring him if I needed to talk. He rang me a day or two later and told me that the aunt and
the child had no broken bones and were both at home nursing some
bruising.
The aunt wanted to talk to me and he asked whether he could give her my phone number. She rang me a few minutes later to tell me that she and her nephew were both well and to thank me for not driving fast. I told her that it was brave of her to try to save the child, and she laughed.
http://www.independent.co.uk/news/uk/home-news/the-day-i-hit-a-child-at-20mph-ndash-and-realised-the-speed-limit-must-be-cut-1985069.html