Terror plotters discussed sending a remote controlled toy car carrying a home made bomb under the gates of a Territorial Army centre in Luton, a court was told.
Zahid Iqbal, 31, and Mohammed Sharfaraz Ahmed, 25, spoke about making an improvised explosive device (IED) based upon instructions in an al Qaida manual entitled "make a bomb in the kitchen of your mom - by the al Qaida chef", Woolwich Crown Court was told.
The court was played covert recordings of the pair in which Iqbal tells Ahmed: "I was looking and drove past like the TA centre, Marsh Road. At the bottom of their gate there's quite a big gap. If you had a little toy car it drives underneath one of their vehicles or something."
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The boy was found unconscious and in cardiac arrest and was rushed to hospital where he died.
The victim, who was wearing her uniform at the time, was found knocking on doors nearly four hours after she was abducted.
There will be gales across Scotland and northern England this morning, but these will gradually ease through the afternoon.