US federal regulators are reportedly studying whether the recent sudden acceleration issues in Toyotas are linked to 'cosmic rays'.
Radiation from space is known to regularly affected airplanes and spacecraft, triggering errors in computer systems.
The phenomenon can trigger software crashes, leaving no trace of a problem. Wheras radio waves can be blocked, cosmic rays cannot.
A Toyota official in the US said its engines were "robust against this type of interference".
Robert Cullen
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